Pintle for hinges



Patented Mar. 8, 1927..

UNITED STATES OFFICE;

JACOB SILBERMAN, OF NEW YORK, N. Y. CLARA SILBERMAN EXEGUTRIX 0F SAIDJACOB SILBERMAN, DECEASED.

' PINTLE FOR I-IINGES.

Application filed December manner as to strengthen it against breakage,

and at the same time to prevent the working loose of the pintle.

In the drawings, 1 is a fragmentary side elevation of my device shownassembled;

Fig. 2 is a perspective view of my improved plug or cap piece;

Fig. 3 is a fragmentary perspective view of a portion of the tubularbacking;

Fig. 4 is a side elevation of a portion of the hinge element whichcoacts with the pintle;

Fig. 5 is a sectional view taken on the line 4-4 Fig. 4; and

Fig. 6 is a side elevation of my plug or cap piece partly in section.

In structures of this class and due to the method of assembling the plugor can pieces into the tubular backing element or binding bar 1, Figs. 1and 3, it has been found in practice that in some instances the plug orcap piece generally denoted by 2, Figs. 2 and 6, on account of itspeculiar construction requires some reinforcement. at its narrowersection, this especially in view of the fact that it is preferred tomake the cap piece of cast aluminum which is sometimes a little brittleand therefore subject to bending due to the fact that these binders areutilized sometimes with a large number of insert-ed leaves and aretherefore quite heavy.

In the construction shown, the plug or cap comprises generally a baseportion 3 upon which is mounted a tube filling portion or plug 4, whichin contour is substantially in close fit with the interior walls of thetubular binding bar 1 as at 5. Fig. 3, so that when the bar is set overthe plug 4 and 0 down on the top of the base portion 3, as

shown in assembly at Fig. 1. the snug fit thereof, after being pinned bymeans of pins P, causes firm engagement with the tubular bar and holdsthe caps in axial alinement 9, 1925. Serial No. 74,333.

one with the other at the top and bottom as shown, the pintles engagingin a hinge fold formed on a butt member B.

A further element on the cap piece 2 is the pintle post or bossgenerally denoted by 6, which is cast integral with the portions 3 and4, and standing upright from the base portion 3 a considerable amount soas to fully reinforce the spindle or pintle 7 later described.

The pintle or spindle 7 is made from a piece of strong wire having atone end a long straight portion or leg 8 constituting a hinge pinprojecting axially from the boss or post 6, the wire at its other endpassing through the post and into the base 3 and being there bent inU-shape, as at 9, and thence passing as a shorter straight portion orleg 8 through the filler plug 4 and extending somewhat above the upperside of the plug, this extending portion of the shorter leg 8 resultingfrom the molding, later described, of the cap piece around the wire andhaving provided during the molding the means for engagement therewith ofa suitable die, not shown, which also engages the longer leg 8 forholding the legs 8 and 8 in desired relation to each other during themolding.

In the partial sectional view shown in Fig. 6, it will be noted that thebent joining portion 9 of the pintle or spindle is integral with thelegs 8, 8, and that in passing from the pivot portion 7 of the spindleto the offset position 8, of the shorter leg, the wire passes throughthe weakest portion of the cast aluminum base 3, thereby greatlyreinforcing the same against bending, due to the fact that the preferredform of construction contemplates the making of the cap piece of castaluminum which is apt at times to bend at the point 00 due to thethinness of the base portion 3 at this point.

In the manufacture of the cap piece, suitable dies, not shown, are soarranged as to engage and hold the upper portions or legs 3, 8 of thespindle wire in desired relation to each other. and molten aluminum ispoured about the lower portions thereof including the bent portion 9,and upon the hardening; of the aluminum, the bent portion and parts ofthe legs of the spindle are firmly embedded within the body of thealuminum cap piece and become substantially integral therewith, at thesame time reinforcing the cap piece at the desired parts thereof.

The construction above noted also develops another desirable featurewhich is that the spindle wire 7 being arranged as described within thebase 3 is prevented, when the binder is in use and of considerableweight, due to the loose leaf matter therein, from being forced throughthe bottom of the base 3 thereby weakeningthe entire structure andtending to scratch or mar the furniture upon which the binder isdisposed.

Referring to Fig. 2, the cap piece has a body portion composed of thebase 3, the filler plug 4 thereon, the base 3 extending beyond the sidesand ends of the plug, the post 6 located on the extended base 3 andspaced away thereon from the adjacent end of the plug 4L, and thepint-lo 7 having a portion extending from the post 6 and constituting ahinge pin and a portion passing through the post 6 and bent to passthrough the base 3 longitudinall thereof and through the plug 4transversely thereof, the post- 6 being spaced away from the adjacentend of the plug to permit one side of the straight cross cut end of thebinding bar 1 to pass between the post and the adjacent end of the plugso that the edge of the straight cross-cut end of said bar bears at allparts of the edge upon the extended base 3 as shown in Fig. 1. 7

hat I claim and desire to protect by Letters Patent is:

A cap piece for loose leaf binders comprising a base member, a plug onone face of the base member spaced marginally therefrom throughout itsextent to fit snugly within the end of a binding bar wit-h the end edgeof the bar bearing against said face, a post projecting from said faceof the base member in spaced relation to one end of the plug and apintle wire having a leg embedded axially in the post with one endprojecting therefrom, a second leg embedded in and extending into theplug, and a portion connecting the legs and embedded in the basememberbetween the opposite faces of the same and reinforcing the base memberbetween the post and the plug.

Signed at New York in the county of New York and State of New York this30th day of November, A. D. 1925.

JACOB SILBERMAN.

